I.F. LIMITER-AMPLIFIER
TCA770
TCA770A
II TCA770D
I.F. LIMITER-AMPLIFIER
with very low current consumption
The TCA 770 is a limiter-amplifier ...
Description
TCA770
TCA770A
II TCA770D
I.F. LIMITER-AMPLIFIER
with very low current consumption
The TCA 770 is a limiter-amplifier with a balanced f. m. detector and an audio preamplifier intended for a frequency range of 100 kHz to 500 kHz with narrow band f. m. The circuit is especially intended for use in portophone sets, where low current consumption and high sensitivity are important.
Supply voltage Ambient temperature Frequ.ency
QUICK REFERENCE DATA Vp Tamb fo
Total current consumption Input limiting voltage (-3 dB) A. F. output voltage at .6.f =' ± 3, 5 kHz (r. m. s. value) A.M. rejection at .6.f = ±3,5 kHz;m = 0,3;fm = 1kHz
Vi = 1 mV Open loop voltage gain
Itot Vi lim V o(rms)
a
Gv
typo 7,5 V
typo 25 °c
typo 100 kHz
typo 450 ~ typo 30 jJV typo 90 mV
typo 50 dB typo 600
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PACKAGE OUTLINES (see general section).
TCA770 : SOT-43 (plastic; 14-lead). TCA770A: plastic 16-lead dual in-line. TCA 770D : SO -14 (plastic 14-1ead flat pack).
July 1976
II
II
- --lTnrrr
CIRCUIT DIAGRAM ...
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